TCWBR-US3 转接板规格书

产品概述

TCWBR-US3 是由杭州涂鸦信息技术有限公司开发的一款低功耗嵌入式 Wi-Fi + Bluetooth Low Energy 转接板。它由一个高集成度的无线射频芯片 RTL8720CF 构成，内置了 Wi-Fi 网络协议栈和丰富的库函数。TCWBR-US3 还包含低功耗的 KM4 MCU、WLAN MAC 和 1T1R WLAN，最高主频 100 MHz，内置 256 KB SRAM，芯片内置 2 MB Flash 和丰富的外设资源。
TCWBR-US3 是一个 RTOS 平台，集成了所有 Wi-Fi MAC 以及 TCP/IP 协议的函数库。用户可以基于这些开发满足自己需求的嵌入式 Wi-Fi 产品。

特性

• 内置低功耗 KM4 MCU，主频 100 MHz，可以兼作应用处理器。
• Wi-Fi/蓝牙连通性：
  • 802.11 B/G/N20
  • 通道 1-14@2.4GHz（CH1-11 for US/CA, CH1-13 for EU/CN）
  • 支持 WEP/WPA/WPA2/WPA2 PSK（AES）安全模式
  • 支持 Bluetooth 4.2 Low Energy
  • 802.11b 模式下 + 20dBm 的输出功率
  • 支持 SmartConfig 功能（包括 Android 和 iOS 设备）
  • 板载 PCB Onboard 天线
  • 通过 CE 和 FCC 认证
  • 工作温度：-20℃ 到 85℃

应用领域

• 智能楼宇
• 智慧家居/家电
• 智能插座、智慧灯
• 工业无线控制
• 婴儿监控器
• 网络摄像头
• 智能公交

TCWBR-US3 接口

尺寸封装

TCWBR-US3 通信为 USB 串口通信。串口定位如下：

引脚	符号	I/O 类型	功能
1	GPIOA_14	I/O	串口 1 TX
2	GPIOA_13	I/O	串口 1 RX
3	GND	P	电源参考地
4	VIN	P	5V 电源输入
5	GPIOA_3	I/O	串口 2TX
6	GPIOA_2	I/O	串口 2RX
7	NC	-	-
8	NC	-	-
9	NC	-	-

TCWBR-US3 成品外壳尺寸图如下所示：

电气参数

电气参数

描述	最小值	最大值	单位
输入电压范围	4.5	5.5	V
工作环境温度	-20	85	℃
工作环境湿度	0%	90%	RH
存储环境温度	-20	85	℃

射频功耗

• TX 连续发送时功耗

  符号	模式	功率	平均值	峰值（典型值）	单位
  IRF	11b 11Mbps	17dBm	217	268	mA
  IRF	11b 11Mbps	18dBm	231	283	mA
  IRF	11g 54Mbps	15dBm	159	188	mA
  IRF	11g 54Mbps	17.5dBm	177	213	mA
  IRF	11n BW20 MCS7	13dBm	145	167	mA
  IRF	11n BW20 MCS7	16.5dBm	165	193	mA

• RX 连续接收时功耗

  符号	模式	平均值	峰值（典型值）	单位
  IRF	11B 11M	63	65	mA
  IRF	11G 54M	65	67	mA
  IRF	11N HT20 MCS7	65	67	mA

工作功耗

工作模式	工作状态，TA = 25℃	平均值	峰值（典型值）	单位
快连配网状态	模块处于快连配网状态，Wi-Fi 指示灯快闪	75	324	mA
网络连接空闲状态	模块处于联网空闲状态，Wi-Fi 指示灯常亮	64	314	mA
网络连接操作状态	模块处于联网操作状态，Wi-Fi 指示灯常亮	66	305	mA
断网状态	模块处于断网状态，Wi-Fi 指示灯常灭	66	309	mA

射频参数

基本射频特性

参数项	详细说明
频率范围	2.400 ~ 2.4835 GHz
Wi-Fi 标准	IEEE 802.11 b/g/n（通道 1 - 14）
Bluetooth Low Energy 标准	蓝牙 4.2
数据传输速率	11b：1，2，5.5，11（Mbps） 11g：6，9，12，18，24，36，48，54（Mbps） 11n：HT20 MCS0~7
天线类型	PCB 天线，增益 2.5 dBi

发射性能

• TX 连续发送性能

  参数项	最小值	典型值	最大值	单位
  RF 平均输出功率，802.11b CCK Mode，1 Mbps	-	17.5	-	dBm
  RF 平均输出功率，802.11g OFDM Mode，54 Mbps	-	14.5	-	dBm
  RF 平均输出功率，802.11n OFDM Mode，MCS7	-	13.5	-	dBm
  RF 平均输出功率，Bluetooth Low Energy 4.2，1 Mbps	-	6.5	-	dBm
  频率误差	-20	-	20	ppm
  EVM@802.11b CCK 11 Mbps Mode 17.5 dBm	-	-	-10	dB
  EVM@802.11g OFDM 54 Mbps Mode 14.5 dBm	-	-	-29	dB
  EVM@802.11n OFDM MCS7 Mode 13.5 dBm	-	-	-30	dB

• 接收性能

  参数项	最小值	典型值	最大值	单位
  PER < 8%，RX 灵敏度，802.11b CCK Mode，1 Mbps	-	91	-	dBm
  PER < 10%，RX 灵敏度，802.11g OFDM Mode，54 Mbps	-	-75	-	dBm
  PER < 10%，RX 灵敏度，802.11n OFDM Mode，MCS7	-	-72	-	dBm
  PER < 10%，RX 灵敏度，Bluetooth Low Energy 4.2，1 Mbps	-	-93	-	dBm

附录：声明

FCC Caution: Any changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate this device.

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

Note: This device has been tested and found to comply with the limits for a Class B digital device, according to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This device generates, uses, and can radiate radio frequency energy and, if not installed and used following the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation.

If this device does cause harmful interference to radio or television reception, which can be determined by turning the device off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.
• Increase the separation between the device and receiver.
• Connect the device into an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.

Radiation Exposure Statement

This device complies with FCC radiation exposure limits set forth for an uncontrolled rolled environment. This device should be installed and operated with a minimum distance of 20cm between the radiator and your body.

Important Note

This radio module must not be installed to co-locate and operating simultaneously with other radios in the host system except following FCC multi-transmitter product procedures. Additional testing and device authorization may be required to operate simultaneously with other radios.

The availability of some specific channels and/or operational frequency bands are country dependent and are firmware programmed at the factory to match the intended destination. The firmware setting is not accessible by the end-user.

The host product manufacturer is responsible for compliance with any other FCC rules that apply to the host not covered by the modular transmitter grant of certification. The final host product still requires Part 15 Subpart B compliance testing with the modular transmitter installed.

The end-user manual shall include all required regulatory information/warnings as shown in this manual, including “This product must be installed and operated with a minimum distance of 20 cm between the radiator and user body”.

This device has got an FCC ID: 2ANDL-TCWBR-US3. The end product must be labeled in a visible area with the following: “Contains Transmitter Module FCC ID: 2ANDL-TCWBR-US3”.

This device is intended only for OEM integrators under the following conditions:

The antenna must be installed such that 20cm is maintained between the antenna and users, and the transmitter module may not be co-located with any other transmitter or antenna.

As long as the 2 conditions above are met, further transmitter tests will not be required. However, the OEM integrator is still responsible for testing their end-product for any additional compliance requirements required with this module installed.

Declaration of Conformity European Notice

Hereby, Hangzhou Tuya Information Technology Co., Ltd declares that this module product is in compliance with essential requirements and other relevant provisions of Directive 2014/53/EU,2011/65/EU. A copy of the Declaration of Conformity can be found at https://www.tuya.com.

This product must not be disposed of as normal household waste, in accordance with the EU directive for waste electrical and electronic equipment (WEEE-2012/19/EU). Instead, it should be disposed of by returning it to the point of sale, or to a municipal recycling collection point.

The device could be used with a separation distance of 20cm to the human body.